Socket for electric lamps.



G. C. KNAUFF.

SOCKET FOR ELECTRIC LAMPS.

APPLIOAUON 1111311 @012.115.1911

1,021,195. Patented M3126, 1912,

IWI/f afar@ iidrney.

i To all whom-it may concern My invention relates to sockets for elecminalplug from the. socket. and of con- 2'5A l'as I ing is an insulating body B, preferably of iso I Que end of 'the casing A has two parallel longitudinal slots G G"diametrically oppo-v site eachother. These slots G G terminate incontinuations -H H' extending circumferv heretofore' to control such lampsA either-by separate switches or by inserting and removwires enter the 'sockets of the lamps. .20

'electrical connections -for -its `varioi'is' parts 'regardless of littlirregularities -in their Fig. 4 is a s iniler section with the plug roal lelf P to the 'axis of the insulating body. I' Into eachof these bores a brass cylinder C 'GEORGE c. YIQIAUFF, or vc riituieo, I LLINors,

SOCKET nos vELEorRIr-i LAMPS.

Application flied octber 16,1911. serial-uo. 655,649.

Be it known that I, GEORGE C. KNAUIF, a citizen of thelnited States, residing atthe' city of Chicago. in the county of Cockatiel',- State of Illinois.' have invented a cert-aim new and useful Iu'ipi'ovement iu Sockets forl Electric Lamps, of which the following is a full, clear, concise, and exact description, reference being had to the accompanyingdrawings, which forni a part of this specif ication.

tric lamps, and particularlyi'to the miniaf ture socketsas used in connection with lights for automobiles. It Ahas been customary ing the terminal plugs through vwhich 'the- `The object of my invention is to provide a simple'and inexpensive means of throwing the parts 4of the-socket into or out .of electrical connection without vreinovimg the terstructing'j al' socket I 'which' will insure 'good size and shape. I attain theseobjects by the construction.,illust-rated von the accompanying drawing," in Whichi Figure 1 is a'ylongitudinai sectionof the socket; Fig 2' is n perspective ,View of the casing which forms part of the said socket; Fig. 3 is a section on the lines with the plug in the position shown. in Fig. 1, and

tated 'a quarter turn so as to disconnect the lampvfrom Lhe wires. Y

In the preferred form of my invention A is a cylindrical casing, preferably of nickeled brass. Mounted near the center ot this cashard jrubbcr, providedjyith two bores paris` slipped and held' iii place by a cap D screwed to the same. Within each 'cylinder is espiral .brass spring E, pressing at both ends against plungers F F which project through the two ends of the brass cylinden entially part Way around the casing, these eontinuations endingin enlarged notchestheflamp. [Thse 'Y Specication of Letters Iatent. l Patented-B [lg 26,' 191,2 5

bayonet` catches for projections J 'on' the f' lamp base U. When the lamp isinjplfic'e, the pressure of the springs E EA against the" 4lplungers F F pressesthesev lungersag'ainst, icontactsfon the lampI base tends to slide the lamp baseoutof thec'asing, thereby forcing the 'projections "Jv -into the notches I, which notches prey'ent".

the lamp from turnin in the'casing if; it

S'erfd' inthe @eine 'at' the' @ndfoppbstef n fproections N Nv are {heldin theg'notclies-Mv y the .pressure o th Spring-Secured by? plunger Ffshiri'ii @hier pera- A tivepositlonfor jcar in'geurrenf terminall plug'Ni/'heu`y the In doing soit cof -should be subjected to jarring. -At-'theother' Q end of-l the 'casing'simlilarf longitudinal slots l KvK 'and circumferential contiriuatio o'flj "the same Il L lead to notches -M"M,.Qthere by forming 4passageways for projections N. N on a terminal plug P adaptedtofbe inl' continued ipast" the notchesM M frzvapprcxima'tely a quarter of theircumference,

ending'- ir similar notches O O the notches O v'0, the -plungers F plug P, as shown in Fig. 4, thereby s witching the llamp out ot ,the circuit. Turning the plug back so that the projections N N on. it engage withthe notches M M', brings the terminal screws Q Q of the plug opposite the plungers F F as shown in Fig. 3,

thus connecting the lamp into. the circuit again'. In this way the lamp can 'betrned oil' and on without removing and again in;- serting the plug and without the need of a separate switch; 1

To insure a goodelectrical connection between the .Wires R. R and theterminals Q Q of, the plug, I preferably make the terminal lscrews'Q Q." serve as tightening members for drawing screw-eyes S 'S' into the tapering sockets T T. With this construction the end of the wire T is vfirst hooked into the eye of-the screw-eye. S and By turning the plug so that thepi'ojections N'A N rest in If" are. brought opposite insulating! parts of the the screw member is then tightened, thereby compressing the`wire betweenQthe screw-eye and the socket, as described in my applicat-ion-of'even date for a patent on a terminal for electric Wires, Serial Number 655,048.

While I have shown and described' the preferred form of my invention, I 'do not wish to be limited to the exact forms shown,

as various modifications may be ,made withoutdepart'ing from the, spirit-of my inthe said insulatiu actuated plunger projecting ronneach end of its bore, means for securing a lamp at one end'of thecasing invsuch relation to the insulating body that the lamp terminals will Contact with the plungers at one end of the' said insulating body, and means or's'ecurfing a wire-terminalplug,tothe'other mndofthe casing, the said plug being rotatable, so` lLas to bringfits terminals into or out'of cn-- tact with the plungcrs at that end of the insulating body.

2. Ina socket for electric lamps, a cyliynjll drical casing having means at onel end for interlocking with the base of a lamp and l m'eans at the other en d for interlocking with a terminal plug for a pair of wires, incomsof and from the casing, each of thesaid contact bination with a,pair of;compressible .contact members insulatmg from .each other -members beihgfladapted to contact. at its vopposite ends with a lamp terminal and a faim-ira? body lengthwise of the casing, .each of said bores having a spring-j plug 'terminal respectively, the said terminal` plug being rotatable so as to bringthe plug terminals out of contact with compres:

sible contacts when thev plug is rotated.

3. Ina socket for electric lamps, a plug of insulating material, a pair of contacts carried thereby, means for securing the ends of two wires to these contacts respectively, a slotted cylindrical casing having oneend adapted to receive the said plug, the said plug interlocking with' the slots in the said casing so as to allow said plug to be heldin either one of two positions, substantially at right angles to each other', the said cylinder y having slots at the other end adapted to interlock with projections on the base of a lamp,'1n combination with a pair of` compressible contact members Vmounted within the casing, one end of the said contact meml bers contacting with the terminals of the lamp base, and the other end of the 'said contact members contacting with the in-v sulating body of the plug or with the -terminals of the plug, according as the' plug is Vin either oneofl two positions between.

.which it is rotatable.

In witness Awhereof I' havel hereunto set my hand, -this fifth day of October 1911,

in thepresence of two subscribin witnesses.

A. S. PH'iLLIPs.

Vso 

